juniorRecursion
Recursive vs. Iterative: Main Differences?
Updated Apr 28, 2026
Short answer
Recursion uses the call stack and can be cleaner; iteration uses loops and is often more memory-efficient.
Deep explanation
Recursion allows for elegant solutions to hierarchical problems. Recursion uses the call stack and can be cleaner; iteration uses loops and is often more memory-efficient. However, it requires careful handling of the stack to prevent memory exhaustion.
Real-world example
Traversing a family tree.
Common mistakes
- Forgetting the base case, leading to infinite recursion.
Follow-up questions
- What is the space complexity?